They jaw lock and play but whut is crazy is that sanchez <tiger > is smaller than rick <red> but is way more aggressive but at one point rick use to run sanchez is that normal....Like when i feed them Rick will try and get the food and sanchez will crowd him and try and take all the food.... is that cool or are they really not liking each other....

food to a oscar is like someone throwing £50 notes into a crowd of people. it dont matter how friendly you are you would still fight to pickup the most cash.))) its the same for our oscars. he wants all that food and will do his best to eat the lot.maybe its a survival thing.

Cool its just they fight so much to the point where they will like swim and jump up out the water they do it every night

you can consider they are fighting if even if no food,
they keep on bullying. lip-locking is normal as they matured.
however, if lip-locking is showing that they injured each other,
you have to watch out.... they may be two males trying to muscle up
who is the boss.